Method of Producing a Complement of Parts Required for Assembly of a Product

ABSTRACT

A method of producing a set of parts which may be assembled to form a product generally consisting of programming a CNC machine to selectively execute a first routine to form a set of parts from a first panel of material, and generate a map of the layout of the parts on the first panel, provided with identifying indicia, and a set of labels each provided with machine readable indicia identifying the part and operator readable indicia permitting the operator to identity the part on the map, and a second routine to form selected ones of the set of parts from a second panel of material, loading the first panel on the machine, operating the machine to execute the first routine, attaching each of the generated labels to its corresponding formed part, matching identifying indicia on generated labels and map, removing the set of labeled parts from the worktable, identifying labeled parts deemed defective, machine scanning the machine readable indicia on the labels of produced . parts deemed defective, loading a second panel of material on the machine, operating the machine to execute the second routine to reproduce the defective parts and replacing the defective parts with reproduced parts.

This invention relates to a method of producing a set of parts which may be assembled to form a product. The invention further contemplates such a method which additionally provides for expeditiously producing defective and/ or missing ones of such set of parts.

BACKGROUND OF THE INVENTION

In the prior art, there has been developed a method of forming a set of parts intended for use in assembling a particular product which generally consists of programming a CNC machine to form the set of parts from panels of material, loading the panels on the worktable of the machine and operating the machine to form the parts. Upon such parts having been produced, they commonly are transported to an assembly area where they are perhaps further machined or otherwise treated, fitted together and possibly finished to provide an end product such as a piece of furniture and the like.

In the course of forming and subsequently handling and assembling such parts, it often occurs that the material from which the part is formed is found to be flawed, the forming of the part may be found to be defective and/or the part becomes misplaced or lost in transit, requiring the reproduction of such part. Since the forming of such flawed, defective or missing part had been accomplished in the course of the formation of the set of parts, the reproduction of any number of such parts less than the full set of parts requires a special forming of the part or parts involving undue time, effort and expense. Accordingly, it is the principal object of the present invention to provide a method of reproducing one or more flawed, defective or missing parts of a set of such parts intended to be assembled to provide a finished product which is expeditious, comparatively effortless and economical.

SUMMARY OF THE INVENTION

In one embodiment of the present invention there is provided a method of producing a set of parts which may be assembled to form a product consisting of programming a CNC machine to selectively execute a first routine to form a set of parts from a first panel of material, and generate a map of the layout of the parts on the first panel, provided with identifying indicia, and a set of labels each provided with machine readable indicia identifying the part and operator readable indicia permitting the operator to identify the part on the map, and a second routine to form selected ones of the set of parts from a second panel of material, loading the first panel of material on a worktable of the machine, operating the machine to execute the first routine, attaching each of the generated labels to its corresponding formed part, matching identifying indicia on the generated labels and map, removing the set of labeled parts from the worktable, identifying labeled parts deemed defective, machine scanning the machine readable indicia on the labels of produced parts deemed defective; loading a second panel of material on the worktable of the machine, operating the machine to execute the second routine to reproduce the defective parts, and replacing the defective parts with the reproduced parts.

In another embodiment of the invention in which one or more formed parts are found to be mislaid or missing, there is provided a variation of the method described which includes programming such a machine to selectively execute a first routine to form a set of parts from a first panel of material, and generate a map of the layout of the parts on the first panel, provided with identifying indicia, and a set of labels each provided with machine readable indicia identifying the part and operator readable indicia permitting the operator to identify the part on the map, a second routine to regenerate the map and labels, and a third routine to form selected ones of the set of parts from a second panel of material. Such method further provides for discerning missing ones of the formed parts, operating the machine to execute the second routine, identifying the reproduced labels corresponding to the missing ones of the formed parts utilizing one of the initially generated or regenerated maps; machine scanning the machine readable indicia on the labels identified as corresponding to the ones of missing parts, loading a second panel of material on the worktable of the machine, operating the machine to execute the third routine to reproduce the missing parts from the second panel and combining the reproduced ones of the missing parts with the nonmissing ones of the set of parts.

In a further embodiment of the invention, the two methods as described are combined to provide for the reproduction of both defective and missing parts.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a flow diagram of a method for producing a set of parts intended to be assembled to form a particular product; and

FIG. 2 is a flow diagram of a method for reproducing individual parts of the set of parts produced by the method provided in FIG. 1 which have found to be unsuitable for use by reason of having been formed of a flawed material and/or defectively machined or damaged in subsequent handling.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS OF THE INVENTION

Referring to the drawings, there is illustrated a pair of flow diagrams depicting a method of forming a set of parts intended to be assembled together to form a product, and further provide for expeditiously, relatively effortlessly and economically reproducing parts originally produced, found to be flawed, damaged or missing, which embodies the present invention. In the embodiment, as an example, it may be assumed that the object of the invention would be to produce a product such as a piece of furniture from one or more panels of wood by the use of a suitably programmed CNC router. Additionally, the router would be suitably programmed to selectively execute a routine to machine and thus form a set of parts of the piece of furniture from one or more panels of wood, and separately execute additional routines to machine and form selected ones of such set of parts also from panels of wood.

To initiate the process, the operator of the machine would select the product to be formed from the parts to be produced by the machine from a preloaded library of programs, specify the dimensions of the product to be formed by the set of parts to be produced by the machine and the thicknesses of such parts, and select. a back side of the panel of wood from which such set of parts are to be formed, as shown in steps 1, 2 and 3. The machine would then function to calculate the sizes of the individual parts to be produced, nest the individual parts on the selected panel of material from which the parts are to be formed to optimize material usage, calculate the sizes and shapes of the parts to be formed, generate a cut path to form the set of parts, determine the material required to form such parts and then prompt the operator to load the specified panel of material on the worktable of the machine, as indicated in steps 4 through 9. The operator would then load and position on the worktable of the machine, the panel of material specified by the machine, and then restart the machine, as indicated in steps 10 and 11. The machine would then proceed to print certain labels to be attached to the parts to be formed by the machine, and certain instructions in terms of the manner in which such labels are to be attached to the formed parts, usually in the form of a map, as indicated in step 12. In steps 13 and 14, the machine would then begin executing the program to perform the prescribed machining operations on the selected back side of the panel positioned on the worktable of the machine, pausing upon completion to instruct the operator to invert and reposition the panel partially machined. In steps 15 and 16 the operator inverts and repositions the panel on the worktable of the machine and restarts the machine to complete the machining operations on the upper side of the panel. In step 17, the machine functions to machine the inverted, upper side of the panel positioned on the worktable of the machine. Upon completion of the machining operation, utilizing the instructions generated by the machine, the operator applies the labels also generated by the machine on the completed parts positioned on the worktable, as depicted in steps 18 and 19. If additional panels are required to complete the full set of parts to be formed, method steps 7 through 19 would be repeated.

Upon completion of the full set of parts, the parts with labels attached are removed from the worktable of the machine, assembled together and transported to an assembly area, and unused panel portions are discarded by scarping or otherwise.

The indicia imprinted on the labels applied to the parts formed on the machine contain information pertinent to the nature, use and identification of each of the parts. Such indicia would include the nature of the material from which the part is made such as the type of wood, the particular lot or product to which the part relates to facilitate the separation and assembly of the parts for a particular product, any additional procedure to be performed on the part and an identification of such part in the event that replacement of the part may be required. The indicia identifying the part is in the form of machine readable bar code.

After the set of parts has been formed in the manner as described and it is determined either by the machine operator or subsequent handling personnel that a particular part is flawed or damaged, such part may be readily reproduced by returning it to the machine operator who would undertake to replace the part through the use of the method depicted in FIG. 2 of the drawings. In undertaking to reproduce the flawed or damaged part, the operator would first machine scan the bar code on the label of the part to identify the part for the machine, and specify the material thickness of the part as shown in steps 20 and 21. The machine would then calculate the size and shape of the part to he reproduced, generate a cut path program for the part, determine the material required and then prompt the operator to load the prescribed material on the worktable of the machine, as indicated in steps 22 through 25. The operator would then position the prescribed panel of material on the worktable of the machine and restart the program as provided in steps 26 and 27. The machine would then operate as previously described to print a bar coded identification for the part, begin execution of the program to complete one side of the panel and then pause the operation and instruct the operator to invert and reposition the panel on the worktable of the machine as indicated in steps 28, 29 and 30. Prompted by the machine, the operator would then invert and reposition the panel on the worktable of the machine, and restart the program as indicated in steps 31 and 32. The machine then would be restarted to complete the machining operation on the upper side of the part being produced, and the operator would attach the label generated by the machine and unload the finished part in the manner as previously described, as indicated in steps 34 and 35. Such replacement part then would be transported to the assembly area for use in completing the assembly of the product to which the part relates.

In another embodiment of the invention providing for the reproduction of missing ones of the initially produced parts, the machine would be programmed to selectively execute a first routine to form the set of parts from a first panel of material, and generate a map of the layout of the parts on the second panel, provided with identifying indicia, and a set of labels each provided with machine readable indicia identifying the part and operator readable indicia permitting the operator to indentify the part on the map, a second routine to regenerate the map and labels, and a third routine to form selected ones of the set of parts from a second panel of material. The procedure as previously described would be repeated but varied to provide for discerning missing ones of the formed parts, operating the machine to execute the second routine, identifying the reproduced labels corresponding to the missing ones of the formed parts utilizing one of the initially generated or regenerated map, machine scanning the machine readable indicia on the labels identified as corresponding with the ones of missing parts, loading a second panel of material on the worktable of the machine, operating the machine to execute the third routine to reproduce the missing parts from the second panel of material and then combining the reproduced ones of the missing parts with the nonmissing ones of the set of parts.

With the machine suitably programmed and operated as described, defective parts, missing parts, and combinations of defective and missing parts may be expeditiously, relatively effortlessly and economically be reproduced to facilitate the production of the desired products.

From the foregoing detailed description, it will be evident that there are a number of changes, adaptations and modifications of the present invention, which come within the province of those persons having ordinary skill in the art to which the aforementioned invention pertains. However, it is intended that all such variations not departing from the spirit of the invention be considered as within the scope thereof as limited solely by the appended claims. 

1. A method of producing a set of parts which may be assembled to form a product, comprising: programming a CNC machine to selectively execute a first routine to form a set of parts from a first panel of material, and generate a map of the layout of said parts on said first panel, provided with identifying indicia, and a set of labels each provided with machine readable indicia identifying the part and operator readable indicia permitting said operator to identify said part on said map, and a second routine to form selected ones of said set of parts from a second panel of material; loading said first panel of material on a worktable of said machine; operating said machine to execute said first routine; attaching each of the said generated labels to its corresponding formed part, matching identifying indicia on generated labels and map; removing said set of labeled parts from said worktable; identifying labeled parts deemed defective; machine scanning the machine readable indicia on the labels of produced parts deemed defective; loading a second panel of material on said worktable; operating said machine to execute said second routine to reproduce said defective parts; and replacing said defective parts with said reproduced parts.
 2. The method of claim 1 wherein said labels are provided with adhesive surfaces for detachably securing them to said parts.
 3. The method of claim 1 wherein each of said labels includes additional indicia indicating at least one of the sides of the part requiring operations, the end product to which the part relates and the disposition of the part in the end product.
 4. The method of claim 1 wherein said machine readable indicia is in the form of a bar code.
 5. The method of claim 1 wherein said first routine provides for performing a first set of machining function on a first side of said first panel and second set of machining functions on an inverted side of said first panels.
 6. The method of claim 5 wherein said first set of machining functions comprise nonsevering functions and said second set of machining functions include severing functions.
 7. The method of claim 6 wherein said first set of functions includes forming at least one of an indentation and a through opening.
 8. The method of claim 6 wherein said first set of machine functions on said first panel includes severing a part not requiring a machining function on the inverted side thereof.
 9. The method of claim 1 wherein said first routine provides for nesting said parts on said first panel for yielding a maximum utilization of said first panel in producing said set of parts.
 10. The method of claim I wherein said machining functions include at least one of routing, drilling and sawing.
 11. A method of producing a set of parts which may be assembled to form a product comprising: programming a CNC machine to selectively execute a first routine to form a set of parts from a first panel material, and generate a map of the layout of said parts on said first panel, provided with identifying indicia, and a set of labels each provided with machine readable indicia identifying the part and operator readable indicia permitting said operator to identify said part on said map, a second routine to regenerate said map and labels, and a third routine to form selected ones of said set of parts from a second panel of material; loading said first panel of material on a worktable of said machine; operating said machine to execute said first routine; attaching each of the generated labels to its corresponding formed part, matching indentifying indicia on generated labels and maps; removing said set of labeled parts from said worktable; discerning missing ones of said formed parts; operating said machine to execute said second routine; identifying the reproduced labels corresponding to said missing ones of said formed parts utilizing one of the initially generated or regenerated maps: machine scanning the machine readable indicia on the reproduced labels indentified as corresponding to said ones of missing parts; loading a second panel of material on said worktable; operating said machine to execute said third routine to reproduce said missing parts from said second panel; and combining said reproduced ones of said missing parts with nonmissing ones of said set of parts.
 12. The method of claim 11 wherein said labels are provided with adhesive surfaces fro detachably securing them to said initially produced parts.
 13. The method of claim 11 wherein each of said labels includes additional indicia indicating at least one of the sides of the part requiring an operation, the end product to which the parts relates and the disposition of the part in the end product.
 14. The method of claim 11 wherein said machine readable indicia is in the form of a bar code.
 15. The method of claim 11 wherein said first routine provides for performing a first set of machining functions on a first side of said first panel and a second set of machining functions on an inverted side of said first panel.
 16. The method of claim 15 wherein said first set of machining functions includes nonsevering functions and said second set of functions include severing functions.
 17. The method of claim 11 wherein said first routine provides for nesting said parts on said first panel for yielding a maximum utilization of said first panel in providing said set of parts.
 18. The method of claim 11 wherein said machining functions include at least one of routing. drilling and sawing.
 19. A method of producing a set of parts which may be assembled to from a product, comprising: programming a CNC machine to selectively execute a first routine to form a set of parts from a first panel of material, and generate a map of the layout of said parts on said first panel, provided with identifying indicia, and a set of labels each provided with machine readable indicia identifying the part and operator readable indicia permitting said operator to indentify said part on said map, a second routine to regenerate said map and labels, and a third routine to form selected ones of said set of parts from a second panel; loading said first panel of material on a worktable of said machine; operating said machine to execute said first routine; attaching each of the generated labels to its corresponding formed part, matching identifying indicia on generated labels and map; removing said labeled parts from said worktable; discerning defective and missing ones of said set of parts; operating said machine to execute said second routine in circumstances where there is discerned a missing one of said set of parts; identifying any reproduced labels corresponding to any missing ones of said formed parts utilizing one of the initially generated or regenerated maps; machine scanning the machine readable indicia on the labels of any defected parts and the reproduced labels of any missing parts; loading a second panel of material on said worktable; operating said machine to execute said third routine to reproduce any of said defective parts and any of said missing parts; and combining any of said reproduced ones of said defective parts and any of said reproduced ones of said missing parts with the non missing and non defective ones of said set of parts.
 20. The method of claim 19 wherein said first routine provides from nesting said parts in said first panel for yielding a maximum utilization of said first panel in providing said set of parts. 